Thunderspire Guide / Werewolf
Terrlen was an old explorer and guide that knows the twists and turns of the Thunderspire Labyrinth like the back of his hand, and is well at home on the outside of Thunderspire Mountain as well. He was well respected for his abilities by all those who come to trade in the Seven Pillared Hall.
Recently, the man seems preoccupied, and readily admits that not all of his expeditions have been successful, almost seeming to warn those who would hire him.
Sadly, he was cursed with Lycanthropy. He set up the PCs while leading them through the tunnels. He was defeated and slain, put out of his misery.